Related Topics

Environmental Health Division

Drinking Water Operator Certification
What a Class C Operator Needs To Know

Class C applicants are expected to have a mastery of all subjects listed under Class D. They are not expected to have complete mastery of all subjects listed below, but at least should have some familiarity of them in the context of water quality and treatment.

Ability to make common water works measurements, calculations, and conversion is expected. Topics listed with an asterisk (*) may have some level of calculation involved.